Case for thermostatic element



FIG. 1 is a top front perspective view of a case for thermostatic element showing my new design, the broken line showing of wires being environmental and forming no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear side elevational view thereof;

FIG. 6 is a left end elevational view thereof;

FIG. 7 is a right end elevational view thereof. 

The ornamental design for a case for thermostatic element, substantially as shown and described. 